I don't use Studio, but I have to agree about DAZ's support of Carrara.  For a while I tried complaining in the DAZ forums, and in requests to DAZ support.  All that got me was heckled by DAZ supporters (to which I probably over reacted), and ignored by DAZ staff.  I do use the newer version (C8.5), but don't see it as a big step up from 8.1.  Given the lack of updated documentation since V.7, its hard to tell.  But ... Carrara is still a great program, in spite of DAZ's virtual abandonment.  I'm still learning new features and new ways to use old features, thanks to folks like PhilW (Infinite Skills Carrara Tutorials).